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Math improvements to Suzy include file
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@ -242,10 +242,38 @@ typedef struct PENPAL_1 {
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#define MIKEYSPACE 0x02
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#define SUZYSPACE 0x01
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// Structures for math registers
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struct _math_unsigned_multiply {
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unsigned int factor1; // 0xFC52 - 0xFC53
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unsigned int factor2; // 0xFC54 - 0xFC55 write starts multiply
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unsigned char unused2[10]; // 0xFC56 - 0xFC5F do not use
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unsigned long product; // 0xFC60 - 0xFC63
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unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use
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unsigned long accumulate; // 0xFC6C - 0xFC6F
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};
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struct _math_signed_multiply {
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int factor1; // 0xFC52 - 0xFC53
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int factor2; // 0xFC54 - 0xFC55 write starts multiply
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unsigned char unused2[10]; // 0xFC56 - 0xFC5F do not use
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long product; // 0xFC60 - 0xFC63
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unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use
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long accumulate; // 0xFC6C - 0xFC6F
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};
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struct _math_divide {
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unsigned long quotient; // 0xFC52 - 0xFC55
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unsigned int divisor; // 0xFC56 - 0xFC57
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unsigned char unused2[8]; // 0xFC58 - 0xFC5F do not use
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unsigned int dividend2; // 0xFC60 - 0xFC61
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unsigned int dividend1; // 0xFC62 - 0xFC63 write starts divide
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unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use
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unsigned long remainder; // 0xFC6C - 0xFC6F
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};
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/* Suzy Hardware Registers */
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struct __suzy {
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unsigned int tmpadr; // 0xFC00 Temporary address
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unsigned char *tmpadr; // 0xFC00 Temporary address
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unsigned int tiltacc; // 0xFC02 Tilt accumulator
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unsigned int hoff; // 0xFC04 Offset to H edge of screen
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unsigned int voff; // 0xFC06 Offset to V edge of screen
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@ -271,22 +299,29 @@ struct __suzy {
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unsigned char *procaddr; // 0xFC2E address of current spr data proc
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unsigned char unused0[32]; // 0xFC30 - 0xFC4F reserved/unused
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unsigned char unused1[2]; // 0xFC50 - 0xFC51 do not use
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unsigned char mathd; // 0xFC52
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unsigned char mathc; // 0xFC53
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unsigned char mathb; // 0xFC54
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unsigned char matha; // 0xFC55
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unsigned char mathp; // 0xFC56
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unsigned char mathn; // 0xFC57
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unsigned char unused2[8]; // 0xFC58 - 0xFC5F do not use
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unsigned char mathh; // 0xFC60
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unsigned char mathg; // 0xFC61
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unsigned char mathf; // 0xFC62
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unsigned char mathe; // 0xFC63
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unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use
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unsigned char mathm; // 0xFC6C
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unsigned char mathl; // 0xFC6D
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unsigned char mathk; // 0xFC6E
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unsigned char mathj; // 0xFC6F
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union {
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struct {
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unsigned char mathd; // 0xFC52
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unsigned char mathc; // 0xFC53
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unsigned char mathb; // 0xFC54
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unsigned char matha; // 0xFC55 write starts a multiply operation
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unsigned char mathp; // 0xFC56
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unsigned char mathn; // 0xFC57
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unsigned char unused2[8]; // 0xFC58 - 0xFC5F do not use
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unsigned char mathh; // 0xFC60
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unsigned char mathg; // 0xFC61
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unsigned char mathf; // 0xFC62
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unsigned char mathe; // 0xFC63 write starts a divide operation
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unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use
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unsigned char mathm; // 0xFC6C
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unsigned char mathl; // 0xFC6D
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unsigned char mathk; // 0xFC6E
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unsigned char mathj; // 0xFC6F
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};
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struct _math_unsigned_multiply unsigned_multiply;
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struct _math_signed_multiply signed_multiply;
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struct _math_divide divide;
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};
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unsigned char unused4[16]; // 0xFC70 - 0xFC7F do not use
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unsigned char sprctl0; // 0xFC80 sprite control bits 0
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unsigned char sprctl1; // 0xFC81 sprite control bits 1
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